Deposition is the process in which a gas changes directly to a solid without going through the liquid state.Examples of deposition include: ^{ck12.org 1 2}

• Frost forming on the ground and cirrus clouds forming high in the atmosphere.
• Metallic films, transparent conductive oxides, superconducting films, and coatings created through chemical deposition.
• Magnesium fluoride deposition used on optical lenses to achieve anti-reflective effects.
• Solar cells, electric connections, synthetic diamonds, silicon dioxide, and semiconductor devices made by depositing thin layers of materials.